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Use of NAP gene to manipulate leaf senescence in plants

United States Patent

8,420,890
April 16, 2013
View the Complete Patent at the US Patent & Trademark Office
The present invention discloses transgenic plants having an altered level of NAP protein compared to that of a non-transgenic plant, where the transgenic plants display an altered leaf senescence phenotype relative to a non-transgenic plant, as well as mutant plants comprising an inactivated NAP gene, where mutant plants display a delayed leaf senescence phenotype compared to that of a non-mutant plant. The present invention also discloses methods for delaying leaf senescence in a plant, as well as methods of making a mutant plant having a decreased level of NAP protein compared to that of a non-mutant plant, where the mutant plant displays a delayed leaf senescence phenotype relative to a non-mutant plant. Methods for causing precocious leaf senescence or promoting leaf senescence in a plant are also disclosed. Also disclosed are methods of identifying a candidate plant suitable for breeding that displays a delayed leaf senescence and/or enhanced yield phenotype.
Gan; Susheng (Ithaca, NY), Guo; Yongfeng (Ann Arbor, MI)
Cornell Research Foundation, Inc. (Ithaca, NY)
12/ 294,593
20090288218
March 28, 2007
This invention was made with government support under Grant No. DE-FG02-02ER15341 awarded by the U.S. Department of Energy Basic Energy Sciences and Grant No. IS-3645-04 awarded by the U.S.-Israel Binational Agricultural Research and Development (BARD) Fund. The U.S. Government has certain rights in this invention.